NFC: NCI: Simplify NCI SPI to become a simple framing/checking layer
NCI SPI layer should not manage the nci dev, this is the job of the nci chipset driver. This layer should be limited to frame/deframe nci packets, and optionnaly check integrity (crc) and manage the ack/nak protocol. The NCI SPI must not be mixed up with an NCI dev. spi_[dev|device] are therefore renamed to a simple spi for more clarity. The header and crc sizes are moved to nci.h so that drivers can use them to reserve space in outgoing skbs. nci_spi_send() is exported to be accessible by drivers. Signed-off-by: NEric Lapuyade <eric.lapuyade@intel.com> Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>
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